The Development of Science Identity Self-Test to Measure the Level of Science Identity Based on PISA 2025 Framework S Wahyudhi, S E S Mu^aziyah, H Mulyastuti, M A Rais
Natural Science Education Department
Universitas Trunojoyo Madura
Abstract
In the face of rapid and complex global change, we need more scientists who apply scientific methods to generate new knowledge, and communities who apply this knowledge effectively. Previous research revealed that cultivating a science identity (SCID) or environmental identity (EID) can motivate individuals to develop skills, interests, and enthusiasm in addressing environmental issues. The literature study^s results reveal a lack of widespread use of science identity instruments in research. The PISA 2025 Science Framework announced the inclusion of the concept of science identity. For this reason, it is necessary to prepare a science identity instrument based on the PISA Framework 2025. The purpose of the study is to develop SIST (Science Identity Self-Test) to measure the level of science identity based on the PISA 2025 Framework and to test the validity and reliability of SIST. Using the Rasch measurement model, the psychometric evaluation revealed that the instrument demonstrated high reliability, with Person reliability (0.91) and item reliability (0.98) categorized as excellent. Out of the 49 items tested, 37 met the fit criteria, ensuring robust measurement properties. The dimensionality analysis validated the instrument^s uni-dimensionality, as measures explained raw variance at 35.7%, satisfying the threshold requirements. The SIST instrument provides a reliable and valid tool for assessing science identity among students and can serve as a basis for future research and practical applications in science education.
Keywords: Science Identity, Science education, PISA 2025, Rasch Model
